Improvement in adjustable watch-keys



W. HAINES. Adjustable 'Watch-Key.

Patented April 16, |878.

ATTORNEY.

n PETEi'S, FHOT0L|THOGRAPHER. WASHINGTON, D C

UNITED STATES PATENT OEEICE.

WILLIAM H AINES, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN ADJUSTABLE WATCH-KEYS.

Specification forming part of Letters Patent No. 202,344, dated April16, 1878; application filed January 31, 1878.

To all whom it may concern:

Beit known that I, WILLIAM HAINEs, oi the city and county ofPhiladelphia, and State of Pennsylvania, have invented a new and usefulImprovement in Watch-Keys, which improvement is fully set forth in thefollowing specification and accompanying drawings, in which- Figure 1 isa side elevation of the key embodying my invention. Figs. 2 and 3 arecentral longitudinal sections in diametricallyopposite directions. Fig.4 is an enlarged view of aportion of Fig. 3. Figs. 5 and 6 are views ofopposite ends of the key.

Similar letters of reference indicate correspondin g parts in theseveral figures.

My invention consists of adjustable jaws adapted to embrace the windingor setting post of a watch, and having parallel motions so as to takefull hold of the post.

It also consists of mechanism imparting quick motions to the jaws withbut little effort of the fingers.

Referring to the drawings, A represents a tube or tubular shank, towhich may be attached a proper steni or handle, B. C represents twojaws, which are tted to one end of the tube A, and each has alongitudinal extension, connection, or tongue, C', which enters the tubeA, and those extensions are iit ted loosely on transverse bars a a',secured to the tube A.

The inner faces of the jaws C are chambered, and the space thereofreceives a pin ion, b, which is connected to a right and left threadedscrew, D, fitted to the two jaws C, and with said pinion b meshes alarger pinion, d, which is mounted on the bar a, and has a portion ofits periphery projecting through the tube A, so as to be readilyaccessible from the exterior of said tube.

It will be seen that by slightly rotating the pinion d in the properdirection, motion is imparted to the pinion b, and a consequent quickopening motion to the jaws. The key may now be applied to the post,after which rotate the pinion d in the other direction, the resultwhereof is a quick closing motion of the jaws on the post, which maythen be turned as desired or required.

It will be noticed that a slight motion of the pinion d in eitherdirection imparts quick motions to the jaws, and that the jaws inoveparallel in said motions, these parallel motions being occasioned by thetransverse bars a a and the operating-screw, which together act asguides for the jaws, whereby, when they close on the watch-post, theytake firm, full, and uniform hold thereof, and there isV no binding ofthe gearing, the advantages of which are evident.

It will also be noticed that the key is adjustable to posts of differentsizes, and the gripe of the jaws may be increased by power properlyexerted on the pinion (l.

Having thus describe-d my invention, what I elaiin as new, and desire tosecure by Letters Patent, is-

1. The jaws tted to transverse bars and provided with anoperating-screw, so as to have parallel motions, substantially as andfor the purpose set forth.

2. rEhe jaws C and tube A, in combination with the gearing b dandright-and-left screw D, substantially as and for the purpose setforth.

WM. HAINES.

Witnesses A. P. GRANT, JOHN A. WIEDERSHEIM.

